Left-Hand Thread Taps | McMaster-Carr

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	Thread Direction Thread Direction	Show

	Left Hand

	Thread Direction Thread Direction	Hide


Right Hand	Left Hand

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Type Thread Type

	Thread Pitch Thread Pitch

	For Use On For Use On

	Chamfer Type Chamfer Type

Plug

Bottoming

Taper

	Application Application

Through-Hole Threading

Closed-End Hole Threading

	Flute Type Flute Type

	Straight
	Spiral Point
	Spiral

	Individual/Set Individual/Set

Individual

Set

	Shank Type Shank Type


Square	Round

	Material Material

High-Speed Steel

Carbide

Stainless Steel

	Finish Finish

Uncoated

Titanium Nitride (TiN) Coated

Titanium Carbonitride (TiCN)
Coated

Aluminum Titanium Nitride
(AlTiN) Coated

	Number of Flutes Number of Flutes

	Overall Length Overall Length

	Pitch Diameter Limit Pitch Diameter Limit

Variable

	Thread Length Thread Length

	Number of Tapping Ends Number of Tapping Ends

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Maximum Tapping Depth Maximum Tapping Depth

	Drill Bit Size Drill Bit Size

	Drill Bit Decimal Size Equivalent Drill Bit Decimal Size Equivalent

	Threads Per Inch Threads Per Inch

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374 Products

Threading

Left-Hand General Purpose Taps

Tap threads for left-hand threaded fasteners.

Left-Hand Chip-Clearing Taps for Through Holes

These taps cut left-hand threads while keeping chips clear.

Left-Hand Pipe and Conduit Thread Taps

Tap left-hand threads for pipe and conduit.

Acme Thread Taps

Form general purpose Acme threads.

Taps for Helical Inserts

Add threads to holes in preparation for installing helical inserts.

Thread Mills

Cut a range of thread sizes with a single tool. These thread mills can also produce both right-hand and left-hand threads.

Left-Hand Tap Sets

For start-to-finish tapping of left-hand threads, these sets include one taper-, one plug-, and one bottoming-chamfer tap.

Helical Inserts with Installation Tools

Inserts come with a through-hole tap and installation tool.